Enhance the Kubernetes Agent listing with useful information update

Due to backend data not yet being available some of the columns in the end-state design vision had to be left out of the MVC build. This issue will keep track of the updates that need to be completed/built once the data becomes available.

Release notes

The GitLab Agent for Kubernetes requires the agentk component to be installed in the Kubernetes cluster connected to GitLab. While we documented the compatibility between the GitLab installation and agentk versions until now it was not very intuitive to figure out compatibility issues. To support Agent users in their upgrades, GitLab now shows the agentk version installed on the agent listing page.

Scope

Add the following columns to the list view

• agentk version